SHANGHAI YONGDA ELECTRIC

ZW20DF-12/630-20 (ZW20A-12) Outdoor AC vacuum circuit breaker is rated 12kV, three-phase AC 50Hz outdoor high voltage switchgear. Mainly used for breaking, closing load current power system, overload current and short circuit current.
For substation, industrial and mining enterprises and urban and rural power for protection and control, especially for frequent operation of the distribution network sites and urban network automation.
In the national authority through a comprehensive type tests, meet the following criteria:
GB1984 High voltage AC circuit breaker;
GB/T11022 High-voltage switchgear and control equipment standards common technical requirements;
D11402AC high voltage circuit breakers ordering technology.

City, rural power grids ideal equipment:
Controllers can be equipped with a remote control, telemetry and remote adjustment, to achieve "four remote" feature.
Flexible and convenient:
This product is an electric energy storage, electric division, both manual storage, manual switching, and can close or remote operation.
Breaking superior performance:
25kA short-circuit breaking current up to 30 times.
Operating power, high reliability:
Operatives newly designed small electric spring mechanism (about 30W) is reduced to a minimum.
Installation flexibility:
Lifting column can be mounted or pedestal mounting.
Sealing performance and reliability:
SF6 zero pressure gauge and seal structure using mature technology, reliable sealing performance, easy to leak.
The unique inlet and outlet:
Silicone rubber tube, so that sufficient insulation distance between terminals, excellent external insulation properties.
Use safety:
At the top of the box is installed explosive devices, even in the event of internal faults, there will be no high-temperature gas or spatter leaked.

No.	Project Name	Unit	Parameter
1	Rated voltage	kV	December 24
2	Rated frequency	Hz	50
3	Rated Current	kA	630、1000
4	Rated short-circuit breaking current	kA	12.5 16 20 25
5	Rated peak withstand current (peak)	kA	31.5 40 50 63
6	Rated short circuit withstand (4S)	kA	12.5 16 20 25
7	Rated short-circuit current (peak)	Secondary	31.5 40 50 63
8	Mechanical life times	Secondary	10000
9	Rated short-circuit breaking current breaking times	kA	30
10	1min power frequency withstand voltage (phase to earth / fracture)	kV	42/49/60
11	Lightning impulse withstand voltage peak (white, right / fracture)	kV	75/85/125
12	1min power frequency withstand voltage secondary circuit	kV	2
13	Net weight	kg	140
14	SF₆Rated gas gauge	Mpa	"0"

Note: When the product site altitude exceeds 1000m, the insulation level by the corresponding correction factor.

Altitude: not exceed 1000m;
Ambient air temperature: -40 ℃ ~ +40 ℃, diurnal temperature: diurnal temperature variation of not more than 25 ℃;
Wind speed: less than 34m / s;
Non-flammable, explosion, strong corrosive chemicals (such as various acids, bases, or smoke, etc.) and severe vibration.